Rivet-head-cutting machine.



W. M. TAYLOR,

RIVET HEAD CUTTING MACHINE.

APPLICATION FILED 313.20, 1914.

1,1 1 5,348. Patented. 001;. 27, 19141 2 $HEETSSHEET l.

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APPLICATION FILED FEB.20, 1914. 1,1 1 5,348 Patented Oct. 27, 191i 2 SHEETS-SHEET 2.

wi lwwooeo M UNITED STATES. PATENT OFFICE.

WALLACE M. TAYLOR, 0F CLEVELAND, OHIO, ASSIGNOR 0F FORTY 'NINE ONE- HUNDREDTHS TO JOSEI'H HLATKY, OF CLEVELAND, OHIO.

BIVET-HEAD-CUTTING MACHINE.

Specification oi! Letters Patent.

Patented Oct. 27, 1914.

To all whom it may concern:

Be it known that I, WALLACE M. TAYLOR, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented new and useful Improvements in Rivet-Head-Cutting Mae chines, of which the following is a specification.

This invention relates to improvements in rivet head cutting machines and has particular application to an electrically operated machine of this character. In carrying out the present invention, 1t is my purpose to provide a machine of the class described which will embody among other fe'atur'es a motor driven tool and a magnet disposed adjacent to the tool and adapted, when energized, to hold the ma-;

. a stop collar 12 by means of which outward chine to the work.

It is also my purpose to provlde a rivet head cutting machine which will embrace the desired features of simplicity, efiicienc and durability, which may be handled wit ease and convenience and which will operate effectively under all conditions.

With the above and other objects in view, the invention consists in the construction, combination and arrangement of parts here- 1 inafter set forth in and falling within the scope of the claims. s

In the accompanying drawings; Figure 1 is a view in side elevation of a machine constructed in accordance with the present invention, the same being shown as applied to the work. Fig. 2 is a central vertical sectional view through the machine. Fig. 3 is a transverse sectional view therethrough. Fig. 4 is an enlarged fragmentary vertical sectional view on the line 4-4 of Fig. 2.

Referring now to the accompanying drawings in detail, 1 designates a metallic caslng preferably cylindrical in cross section and equipped at one end with a handle 2 and having handle bars 3, 3 extending outwardly from the side wall thereof at diametrically opposite points. Formed in the end wall of the casing 1 opposite from that equipped with the handle 2 is an opening 4 and secured to the lower side of such end wall concentrically of the opening therein is a bearing 5 within which is rotatably mounted a hub sleeve 6 depending from a gear wheel 7 and working within the opening 4. .To the lower end of the hub sleeve 6 is fastened a collar 8 serving to prevent upward movement of the hub sleeve within the bearmg. Passed through the hub sleeve 6 and the hub of the gear wheel 7 is a spindle 9 spllned to the sleeve so that such spindle may rotate therewith and slide therein. The lower end of the spindle 9. is equipped with a tool receiving socket '10, while encircling such spindle between the upper end of the tool receiving socket 10 and the lower end of the hub sleeve 6 is a coiled expansion spring 11 having one end abutting the lower extremity of the hub sleeve and the opposite end in engagement with the upper extremity of the tool socket 10, such spring acting to hold the spindle 9 and socketlO normally at the limit of outward movement. The inner end-of the spindle 9, that is theend of the spindle within the casing 1, is equipped with movementof the spindle under the action of the spring 15 limited so that disengagement of the spmdle from the gear wheel is avoided. Fastened to the end wall of the casing 1 with the bearing 5 and concentrically of the latter is a circular electromagnet 13 having-the outer end thereof equipped with an annular pole 14; and lining the interior of the coil of the magnet is a bushing 15 constructed of brass or other non-magnetic material and encircling the spindle 9 and socket 10. Mounted within the casing 1 is an electric driving motor 16 having the armature shaft 17 thereof arranged longitudinally of the casing and coaxial therewith. The upper end of the armature shaft 17 is journaled in a suitable bearing carried by the upper end wall of the casing, while the lower end thereof is journaled in a bearing carried by a plate 18 suitably fastened to the side wall of the casing 1 and cotiperating with the adjacent end wall of the casing to provide a gear chamber. Keyed upon the lower extremity of the armature shaft 17 is a gear 19 meshing with a gear wheel 20 fast upon a countershaft 21 journaled in alining bearings carried by the plate 18 and the confronting end wall of the casing respectively. Also fast upon the countershaft is a pinion 22 meshing with the gear wheel 7 on the inner end of the spindle 9.

23 designates an appropriate form of cutter having one end thereof disposed within the socket 10 and suitably secured therein and the opposite end formed with an annular row of cutting teeth 24. Under normal conditions, the cutting edge of the tool 23 is projected outwardly of the pole 14 of the magnet 13 under the action of the spring 11 so that when the machine is applied to the work, as previously described, the cutting tool will be forced inwardly against the ten; sion ofthe spring 11 thereby permitting the latter to react to feed the tool during the cutting Operation. a -J' In practice, the electric motor 16 is energized and; the armature shaft 17 thereof re-i volves. In the rotation of the armature; shaft motion is transmitted through the gears 19, 20, 22 and 7 and the hub sleeve SE to the spindle 9 thereby rotating the spindle? and the tool 23. The cutting edge 24 of; the tool is now engaged with the head of the rivettebe-cut and the'machine as a} 'whole forced toward thework, the pole 14.; engaging the metal surrounding the rivetf being acted upon. The coil of the'magnet 13 is now energized and the pole 14-is held; to the metal in the vicinityiof the rivet; through magnetic attraction. In the move-i ment of the machine toward the work so that 5 the ma et 13, succeeding the energization thereof, will hold the machine to the work, i the spring 11 surrounding the spindle 9 is; compressed and reacts, in the cutting of the. rivet head, to feed the cutter to the work and hold the cutting edge in engagement with the work under pressure. Y 3

From the foregoing description taken in; connection with the accompanying drawings, the construction, mode of operation i and manner of employing m 'inventionwill be readily apparent. It wil be seen that I 5 have provided a rivet head cutting machine wherein the cutting tool is automatically. fed

to the work during the cutting operation and wherein the machine as an entirety is held to the work without manual aid.

While I have herein shown and described one preferred form of my invention by way of illustration, I wish it to be understood that I do not limit or confine myself to the precise details of construction herein de scribed and delineated, as modification and variation may be made within the scope of the claims without departing from the spirit of the invention.

I claim:

1. In a rivet cutting machine, a casing, a motor within said casing, a bearing connected to one end of said casing coaxial with the 'tool socket on the outer end of said spindle,

chine to the work, and means holding said shaft of said motor, a hub sleeve rotatably mounted within said bearing, a gear 'wheel fixed upon the inner end of said sleeve, gear connections between said first gear andmotor, a spindlesplined within said sleeve, a toolsocket on the outer end of said spindle, an expansion spring surrounding said spindle and having one end abutting said tool mounted within said bearing, a gearwheel fixed upon the inner end ofsaid sleeve, gear connections between said first gear'and motor, a spindle splined within said sleeveya};

an expansion spring surrounding said spin-l dle and having one end abutting said tool! socket and the opposite end in engagement} withthe adjacent extremit of said hub andi acting to hold the tool socket projected towardthe work, means'for holding said mahub sleeve against sliding movement the bearing.

3. In a rivet cutting machine, acasing, a motor within said casing, a bearing connect ed to one end of said casing coaxial with the shaftof said motor, a hub sleeve rotatably mounted withinsaid bearing, a gear wheel fixed upon the inner end of said sleeve, gear connections between saidfirst gear and motor, a spindle splined within said sleeve, a tool socket on the outer end of said spindle, an expansion spring surrounding-saidspindle and having one end abutting said tool socketand the opposite end in engagement with the adjacent extremity of said hub and acting to hold the tool socket projected to ward the work, means for holding said machine to the work, and a collar fixed to the Within 8 5 .outer end of said hub sleeve and engaging the adjacent extremity ofsaid bearlng to prevent sliding movement of the sleeve. .105

In testimony whereof I afiix my-signature in presence of two witnesses.

PHILIP SAMPLINER, GEORGE LUDAINS. 

